Substituted O-{8 aminosulfonyl{9 -glycolic anilides

ABSTRACT

New and valuable substituted O-(aminosulfonyl)-glycolic anilides and a process for controlling the growth of unwanted plants with these compounds.

United States Patent [1 1 Fischer et al.

[45] Aug. 5, 1975 I SUBSTITUTED AMINOSULFONYL l-GLYCOLIC ANILIDES [75] Inventors: Adolf Fischer, Muttcrstadt; Gerhard Hamprecht, Mannheim; Dietrich Mangold, Neckargemucnd; Wolfgang Rohr, Mannheim, all of Germany [73] Assignee: Badische Anilin- & Soda-Fabrik Aktiengesellschaft, Ludwigshafen (Rhine). Germany [22] Filed: Sept. 3, 1974 [21 Appl. No.: 502,745

Related US. Application Data [62] Division of Scr. Not 32l 548, Jan. 5, 1973.

[52] U.S. Cl 260/456 A; 71/103; 260/488 CD; 260/558 R; 260/559 R Primary ExaminerBernard Helfin Assistant ExaminerNicky Chan Attorney, Agent, or Firnz-J0hnst0n, Keil, Thompson & Shurtleff 5 7 ABSTRACT New and valuable substituted O-{aminosulfonyllglycolic anilides and a process for controlling the growth of unwanted plants with these compounds.

3 Claims, N0 Drawings SUBSTITUTED O-l AMlNClSULFONYL l-GLYCOLIC ANILIDES This is a division of application Ser. No. 321,548 filed Jan. 5, l973.

The present invention relates to new and valuable substituted O-[aminosulfonyl]-glycolic anilides, their preparation and use as herbicides.

It is known to use ehloroacetic acid-N- isopropylanilide as a herbicide. However, its biological action is only moderate.

We have now found that substituted 0- [aminosulfonyll-glycolic anilides of the formula Y O /R'-' Y RNHS():()(H. .CN

I where R denotes hydrogen, alkyl, haloalkyl or cyeloalkyl. R denotes phenyl and R denotes alkyl, alkenyl, akylnyl, cycloalkyl or benzyl, have a good herbicidalaction. y

l I 0' I I R may bc, lflILl aha, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, pentyl, cyclopentyl, hex'yl, cyclohexyl, Z-chloroethyl.

R may be, inter alia, methyl, ethyl, propyl. isopropyl, n-butyl, isobutyl, see-butyl, tcrt-butyl, pentyl, cyclopentyl, hexyl, cyclohexyl, allyl, butcnyl, pentyl, hexenyl, propargyl, butynyl, pentynyl, hexynyl, benzyl.

As can be seen from the above exempliflcation, the preferred alkyl, alkenyl, haloalkyl and'cycloalkyl substituents are lower-alkyl, -alkenyl, -haloalkyl and -cycloalkyl moieties of up to six carbon atoms.

The herbicidal action of the new compounds is particularly in evidence on the following weeds:

Alopecurus myosuroides slender foxtail Amaranthus spp. amaranth species 40 A ena fatua wild oat Bromus spp. brome species Chenopodium spp. goosefoot species Dactylis glomemta orchardgrass Digitaria sanguinalis large crabgrass Echinochloa crus-galli barnyardgrass Eleusine indica goosegrass Galium aparine catchweed bedstraw Lamium spp. deadncttle species Lolium spp. ryegrass species Matricaria chamomilla chamomile Panicium spp. panicum spp.

Poa spp. bluegrass species Setaria spp. foxtail species Sinapis arvensis ild mustard without causing damage to the crop plants:

Allium cepa onions Beta vulgaris beet Brassica spp, cabbage species Cucumis sati us cucumbers Daucus carota carrots Gossypium hirsutum cotton Helianthus annuus sunflower Hordeum vulgare barley Lactuca spp. lettuce species liinum us ssimum flax Mcdicago sati a alfalfa ()ryla saliva rice 6() Petruselinum sati um parsley Pisum sativum peas Phaseolus spp. beans Sccalc cercale rye Soia hispida (Glycine max.) soybeans Solanum tnherosum potatoes Spinaeia oleracea spinach ,5 Sorghum bicolor sorghum Tritieum aesthum heat 'lrifolium spp. cloycr Zea mays Indian corn Application rates are from 0.2 to 5 kg of active ingredient per hectare; the compounds may be applied before sowing, or before or after emergence of the plants.

The compounds of the invention may be prepared by reacting a substituted glycolic anilide with a substituted aminosulfonyl chloride in the presence of an acid aeceptor, e.g., triethylamine and pyridine.

EXAMPLE I O-[isopropylaminosulfonyl]-glycolic acid-N-butynl -yl-3-anilide At to 5C and while stirring, a solution of 333 parts by weight of isopropylaminosulfonyl chloride in parts by weight of dichloromethane was added to a solution of 35.5 parts by weight of glycolic acid-N-butynl-yl-3-anilide and 21.4 parts by weight of triethylamine in 600 parts by weight of dichloromethane. After 2 hours the reaction mixture was successively washed with dilute hydrochloric acid, water, sodium bicarbonate solution, and again with water, and then dried with magnesium sulfate. The crude product, melting at 99 to C, was obtained from the organic phase upon concentration in vacuo. The pure compound melting at 108 to l 10C may be obtained by recrystallization from benzene.

The compound has thefollowing structural formula:

The compounds listed below may be obtained analogously:

propnrgyl parts by weight of methanol and left to stand at room temperature for 16 hours. The reaction solution was then concentrated to roughly 150 ccm. Upon neutralization of the residue with dilute hydrochloric acid crystals of crude glycolic acid-N-butyn-l-yl-3-anilide separated out; m.p.: 65 to 67C.

This crude product was purified by recrystallization from benzene/ligroin; m.p. 74 to 76C.

The following compounds were obtained analogously: glycolic acid-N-isopropylanilide, m.p. 59 to 60C glycolie acid-N-isobutylanilide, m.p. 53 to 54C glyeolic acid-N-tert-butylanilidc, m.p. 55 to 56C.

Glyeolic anilides are obtained in the same manner by reacting, in accordance with the scheme shown below, N-alkylanilines with l,3dioxolane-2.4-dione (J. Chem. Soc., 1357. 1951 R and R have the meanings given above.

Glycolic acid-N-methylanilidc A solution of 10.7 parts by weight of N-methylaniline in 20 parts by weight of tetrahydrofuran has added to it, at to C and with stirring, a solution of 10.2 parts by weight of l.3-dioxolane-2,4-dionc in parts by weight oftetrahydrofuran. The reaction mixture was then stirred at room temperature until no more carbon dioxide evolved. and subsequently concentrated to dryness in vacuo. The crude product obtained melts at 48 to 50C; the analytically pure compound is obtained by recrystallization from ether; m.p.; 50 to 52C.

The following compounds were obtained analogously:

glycolic glycolic glycolic glycolic glyeolic glycolic glycolie glycolic acid-N-ethylanilide, m.p. 39 to 41C acid-N-n-propylanilide m.p. 68 to 69C acid-Npropargylanilide. m.p. 69 to 71C acid-N-3-methylbutyn-1-yl-3-anilide acid-N-allylanilide acid-N-buten-1-yl-3-anilide aeid-N-3-methylbutenl -yl-3-anilide acid-N-cyelohexylanilide glycolic acid-N-cyclopentylanilide glyeolic acid-'N-benzylanilidc.

The agents according to the invention may be used as solutions. emulsions. suspensions or dusts. The form of application depends entirely on the purpose for which the agents are being used; in any case it should ensure a fine distribution of the active ingredient.

For the preparation of solutions to be sprayed direct, hydrocarbons having boiling points higher than 150C. e.g.. tetrahydronaphthalene or alkylated naphthalenes. or organic liquids having boiling points higher than 150C and having one or more than one functional group. e.g.. the keto group, the ether group. the ester group or the amide group, this group or these groups being attached as substituent(s) to a hydrocarbon chain or being a component of a heterocyclic ring, may

be used as spray liquids.

Aqueous formulations may be prepared from emulsion concentrates. pastes or wettable powders by adding water. To prepare emulsions the ingredients as such or dissolved in a solvent may be homogenized in water or organic solvents by means of wetting or dispersing agents. e.g. polyethylene oxide adducts. Concentrates which are suitable for dilution with water may be prepared from active ingredient, emulsifying or dispersing agent and possibly solvent.

Dusts may be prepared by mixing or grinding the active ingredients with a solid carrier, e.g., kieselguhr, talc, clay or fertilizers.

Granules may be prepared by applying the active ingredients to solid carriers of various particle sizes.

Adherents, oils and other herbicidal active ingredients may also be added.

EXAMPLE 2 1n the greenhouse, loamy sandy soil was filled into pots and sown with Zea mays, Soja hispida, Gossypium hirsutum, Beta vulgaris, Eehinochloa crus-galli, Setaria spp., Poa trivialis, Bromus tectorum and Alopecurus myosuroides. The soil prepared in this manner was then treated with 2 kg per hectare of O-(isopropylaminosulfony1)-glycolic acid-N-butyn-l-yl-3-anilide (l) and, for comparison, with 2 kg per hectare of chloroacetic acid- N-isopropylanilide (11), each active ingredient being dispersed in 500 liters of water per hectare.

After 4 to 5 weeks it was ascertained that active ingredient 1 had the same good crop plant compatibility as 11, combined with a stronger herbicidal action.

The results of this experiment are given below:

On an agricultural plot the plants Zea mays, Gossypium hirsutum, Soja hispida, Beta vulgaris, Eehinochloa crus-galli, Digitaria sanguinalis, Panieum virgatum, Eleusine indica and Poa annua were treated at a growth height of 2 to 14 cm with 2 kg per hectare of l and 2 kg per hectare of 11, each active ingredient being emul-' sified in 500 liters of water per hectare.

After 3 to 4 weeks it was ascertained that active ingredient 1 had not only better crop plant compatibility than 11, but also a stronger herbicidal action.

The results of this experiment are given below:

Active ingredient l ll Zea mays 0 0 Gossypium hirsutum 0 l5 Soja hispida 5 15 Beta vulgaris 0 10 Eehinochloa crus-galli 60 Digit-aria sanguinalis 40 Panieum \irgatum 90 40 Eleusine indica 90 30 Poa annua 80 15 o no damage complete destruction The action of the following compounds corresponds to that of 1 above:

O-( isopropylaminosulfonyl l-glycolic acid-N- methylanilide O-(isopropylaminosulfonyl )-glycolic acid-N- acid-N-sec- EXAMPLE 4 90 parts by weight of compound I is mixed with I parts by weight of N-methyl-a-pyrrolidone. A mixture is obtained which is suitable for application in the form of very fine drops.

EXAMPLE 5 20 parts by weight of compound I is dissolved in a mixture consisting of 80 parts by weight of xylene, parts by weight of the adduet of 8 to l 0 moles of ethylene oxide to I mole of oleic acid-N- monoethanolamide, 5 parts by weight of the calcium salt of dodecylben'zenesulfonic acid, and 5 parts by weight of the adduct of 40 moles of ethylene oxide to I mole of castor oil. By pouring the solution into 100,000 parts by weight of water and uniformly distributing it therein, an aqueous dispersion is obtained containing 0.02% by weight of the active ingredient.

EXAMPLE 6 parts by weight of compound I is dissolved in a mixture consisting of 40 parts by weight of cyclohexanone, 30 parts by weight of isobutanol, 20 parts by weight of the adduct of 7 moles of ethylene oxide to 1 mole of isooctylphenol, and 10 parts by weight of the adduct of 40 moles of ethylene oxide to 1 mole of castor oil. By pouring the solution into 100,000 parts by weight of water and uniformly distributing it therein, an aqueous dispersion is obtained containing 0.02% by weight of the active ingredient.

EXAMPLE 7 20 parts by weight of compound I is dissolved in a mixture consisting of parts by weight of cyclohe-xano], 65 parts by weight ofa mineral oil fraction having a boiling point between 210 and 280C, and 10 parts by weight of the adduct of 40 moles of ethylene oxide to 1 mole of castor oil. By pouring the solution into 100,000 parts by weight of water and uniformly distributing it therein, an aqueous dispersion is obtained containing 0.02% by weight of the active ingredient.

EXAMPLE x 20 parts by weight of compound I is well mixed with 3 parts by weight of the sodium salt of diisobutylnaphthalenc-a-sulfonic acid, 17 parts by weight of the sodium salt ofa ligninsulfonic acid obtained from a sulfite waste liquor, and parts by weight of powdered silica gel, and triturated in a hammer mill. By uniformly distributing the mixture in 20,000 parts by weight of water, a spray liquid is obtained containing 0.1% by weight of the active ingredient.

EXAMPLE 9 3 parts by weight of compound I is intimately mixed with 97 parts by weight of particulate kaolin. A dust is obtained containing 3% by weight of the active ingredi- CHI.

EXAMPLE IO 30 parts by weight of compound I is intimately mixed with a mixture consisting of 92 parts by weight of powdered silica gel and 8 parts by weight of paraffin oil which has been sprayed onto the surface of this silica gel. A formulation of the active ingredient is obtained having good adherence.

EXAMPLE l I acid-N- VII. O-( isopropylaminosulfonyl )-glycolic acid-N- ethylanilide 7 VIII. O-( ethylaminosulfonyl )-glycolic acid-N- ethylanilide After 3 weeks it was ascertained that the active ingredients exhibited good crop plant compatibility combined with an excellent herbicidal action.

The results are given below:

Active ingredient I III IV V VI VII VIII Crop plants:

Soja hispida 0 5 0 0 0 0 0 Gossypium hirsutum 0 0 0 0 0 0 0 Beta \ulgaris 0 0 0 0 0 0 0 Brassica napus 0 0 0 0 0 0 0 Helianthus annuus 0 0 0 0 0 0 0 Allium cepa 0 0 0 0 0 0 0 Spinacia oleracca 0 0 0 0 0 0 0 Pisum sativum 0 0 0 0 0 0 0 Unwanted plants:

Echinochloa crus-galli )5 I00 )5 )5 100 I00 )5 Digitaria sanguinulis )5 I00 )5 )0 I00 )5 )0 Setariu faherii )5 I00 )5 )0 I00 )5 )5 Poa :mnua I00 I00 I00 I00 I00 I00 

1. A SUBSTITUDED O-(AMINOSULFONYL)-GLYCLOIC ANILIC OF THE FORMULA
 2. The compound of claim 1, which is O-(2-chloroethylaminosulfonyl)-glycolic acid-N-isopropylanilide.
 3. The compound of claim 1, which is O-(2-chloroethylaminosulfonyl)-glycolic acid-N-tert-butylanilide. 